This week’s London Classic at the Olympia Conference Centre has produced an epidemic of draws, with only two decisive games out of 25 in the first five rounds. Yet it also featured a significant swing at the top of world chess.

The US No1, Fabiano Caruana, won in rounds four and five, established a clear one point lead going into this weekend’s closing rounds, jumped to No2 in the rankings behind the world champion, Magnus Carlsen, and now looks a potential winner of the 2018 candidates event which will decide Carlsen’s next challenger.